Article (Scientific journals)
Expression characteristics of potential biomarker genes in Tra catfish, Pangasianodon hypophthalmus, exposed to trichlorfon
Sinha, Amit Kumar; Vanparys, Caroline; De Boeck et al.
2010In Comparative Biochemistry and Physiology. Part D, Genomics and Proteomics, 5 (3), p. 207-216
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Keywords :
Pangasianodon hypophthalmus; Real time PCR; Trichlorfon; Heat shock protein 70; Gene expression; Cytochrome oxidase subunit 1; Acetylcholinesterase; Aquaculture; Biomarkers
Abstract :
[en] Trichlorfon (TRC) is the most common organophosphorous insecticide used in aquaculture practices in Southeast Asian countries. Indiscriminate use of TRC can either damage or alter the enzymatic and hormonal activities in the living organisms. In this present study, therefore, toxicogenomic analyses using real time PCR was used to characterize expression levels of various genes in Pangasianodon hypophthalmus after exposure to three concentrations, the 96 h 1/100LC50 (0.01 mg/L), the 96 h 1⁄10LC50 (0.1 mg/L) and the 96 h 1⁄2LC50 (0.5 mg/L) of TRC for 6 h, 24 h, 96 h, 7 days, 14 days, 28 days and 56 days respectively. The expression kinetics of stress and other cellular toxicity representative genes such as heat shock protein70 (HSP70), growth hormone, acetylcholinesterase (AChE), trypsinogen, cytochrome P4501B (CYP1B) and cytochrome oxidase subunit 1 (COI) were investigated in liver and gills. TRC at a level of 0.1 mg/L and 0.5 mg/L induced a time and dose-dependent increase in the expression of the HSP70, COI and CYPIB while the transcript level of AChE, growth hormone and trypsinogen were significantly down-regulated. These results could permit to develop a ‘molecular biomarker system’ which can be applied as a first-tier method of identifying contaminant exposure before effects at population level occur.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Sinha, Amit Kumar
Vanparys, Caroline
De Boeck
Kestemont
Wang, Neil
Phuong, Nguyen Thanh
Scippo, Marie-Louise  ;  Université de Liège - ULiège > Département de sciences des denrées alimentaires > CART, Analyse des denrées alimentaires
De Coen, Wim
Robbens, Johan
Language :
English
Title :
Expression characteristics of potential biomarker genes in Tra catfish, Pangasianodon hypophthalmus, exposed to trichlorfon
Publication date :
2010
Journal title :
Comparative Biochemistry and Physiology. Part D, Genomics and Proteomics
ISSN :
1744-117X
Publisher :
Elsevier, Netherlands
Volume :
5
Issue :
3
Pages :
207-216
Peer reviewed :
Peer reviewed
Available on ORBi :
since 24 May 2010

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